Update link to repository

README.md

@@ -14,7 +14,7 @@ CLEF 2022 and first released in [this repository][2]. This model is case-sensiti
 it makes a difference between english and English.
 
  [1]: https://www.cs.rit.edu/~dprl/ARQMath/
- [2]: https://github.com/witiko/scm-at-arqmath3
+ [2]: https://github.com/witiko/scm-at-arqmath3/blob/main/03-finetune-roberta.ipynb
 
 ## Model description